Bugs We’ve Put in Your Ear

In this chapter, you learned the following:

• Finding and fixing bugs early reduces overall effort.

• When choosing test cases, you should consider size, dichotomies, boundary cases, and order.

• To test your functions, you can write subclasses of unittest’s TestCase class. The advantages of using unittest include keeping the testing code separate from the code being tested, allowing tests to be independent of one another, and enabling the documentation of each test case.

• To debug software, you have to know what it is supposed to do and be able to repeat the failure. Simplifying the conditions that make the program fail is an effective way to narrow down the set of possible causes.

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